$ git clone -n https://src.fedoraproject.org/rpms/vlc-plugin-bittorrent.git /var/lib/mock/f40-build-762364-121986/root/chroot_tmpdir/scmroot/vlc-plugin-bittorrent
Cloning into '/var/lib/mock/f40-build-762364-121986/root/chroot_tmpdir/scmroot/vlc-plugin-bittorrent'...
$ git fetch origin aed92313bb94c66fce194164fa14cb373b1db14e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vlc-plugin-bittorrent
 * [new ref]         aed92313bb94c66fce194164fa14cb373b1db14e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aed9231 Convert to %autorelease and %autochangelog